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C and N abundances in globular clusters. I. The case of 47 Tuc and the effect of the first dredge-up
S. Villanova, L. Monaco, Y. Momany +2
Globular clusters exhibit star-to-star chemical variations, traceable through both photometric and spectroscopic data. In this study, we investigate chemical variations in the glob…
Simulating the Legacy Survey of Space and Time stellar content with TRILEGAL
Piero Dal Tio, Giada Pastorelli, Alessandro Mazzi +19
We describe a large simulation of the stars to be observed by the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). The simulation is based on the TRILEGAL code, wh…
The normal chemistry of multiple stellar populations in the dense globular cluster NGC 6093 (M 80)
E. Carretta, A. Bragaglia, R. G. Gratton +6
We present the abundance analysis of 82 red giant branch stars in the dense, metal-poor globular cluster NGC 6093 (M 80), the largest sample of stars analyzed in this way for this…
On the HI-Hole and AGB Stellar Population of the Sagittarius Dwarf Irregular Galaxy
Y. Momany, M. Clemens, L. R. Bedin +8
Using two HST/ACS data-sets that are separated by ~2 years has allowed us to derive the relative proper-motion for the Sagittarius dwarf irregular (SagDIG) and reduce the heavy for…
The extreme chemistry of multiple stellar populations in the metal-poor globular cluster NGC 4833
E. Carretta, A. Bragaglia, R. G. Gratton +7
Our FLAMES survey of Na-O anticorrelation in globular clusters (GCs) is extended to NGC 4833, a metal-poor GC with a long blue tail on the horizontal branch (HB). We present the ab…
NGC 362: another globular cluster with a split red giant branch
E. Carretta, A. Bragaglia, R. G. Gratton +7
We obtained FLAMES GIRAFFE+UVES spectra for both first and second-generation red giant branch (RGB) stars in the globular cluster (GC) NGC 362 and used them to derive abundances of…